package com.dongrj.framework.core.thread;

import com.dongrj.framework.core.utils.StringUtils;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;

/**
 * @author dongrongjun
 * @date 2020/06/30
 */
public class NameThreadFactory implements ThreadFactory {

    private static final AtomicInteger poolNumber = new AtomicInteger(1);

    private final ThreadGroup group;

    private final AtomicInteger threadNumber = new AtomicInteger(1);

    private final String namePrefix;

    public NameThreadFactory(String poolName) {
        SecurityManager s = System.getSecurityManager();
        group = (s != null) ? s.getThreadGroup() : Thread.currentThread().getThreadGroup();
        namePrefix = StringUtils.defaultIfEmpty(poolName, "pool") + "-" + poolNumber.getAndIncrement() + "-thread-";
    }


    @Override
    public Thread newThread(Runnable r) {
        Thread t = new Thread(group, r, namePrefix + threadNumber.getAndIncrement(), 0);
        if (t.isDaemon()) {
            t.setDaemon(false);
        }
        if (t.getPriority() != Thread.NORM_PRIORITY) {
            t.setPriority(Thread.NORM_PRIORITY);
        }
        return t;
    }
}
